Write / Wia - Honeywell EXCEL 5000 User Manual

ALPHABETIC REFERENCE
I/O Dialog Box
Internal parameters
Initial Dialog Box
Attribute Selection Dialog Box
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)
Function Write the value of an input with a defined priority to an output which must be
connected with the present value of a datapoint. The datapoint must be connected
directly not by a connection line.
Inputs Three inputs where:
Value: to be written
Enable: 1 = write is enabled. Value will be written to the selected priority of the
connected output provided that this priority is currently not set or the
new value is different.
0 = Write is disabled. If the Enable input changes from TRUE (1) to FALSE (0), the
selected priority of the output is released provided that this statement has written the
priority while the Enable input was TRUE and the current value of the priority is
equal to the value that was written (but not necessarily equal to the current Value
input).
NOTES:
• It is strongly recommended not to change the priority while the Enable input is
TRUE (1) or in the first cycle when it is FALSE. Using a constant for the priority
will avoid unexpected misbehavior.
• If the Enable input is FALSE in the first executed cycle after application start the
priority is always released.
Prio: priority level that will be applied for writing
Levels are 2-16
Outputs One output: Y = present value of datapoint
None
Function Write a value to an attribute of a user address. The value can come from a
parameter, physical point, or another control icon. WIA writes to a maximum of three
attributes for one point.
The WIA icon displays the following dialog box when you first place the icon in the
work space and click it. Select the point you want to write to and then connect it to
the ADR output in the WIA box.
Output One point, any type (ADR).
After you connect an output to ADR, the Attribute Selection dialog box displays.
Select the desired attributes.
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Write / WIA